AD 91-23-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -15, -30, -30F, -40, -40F, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -15, -30, -30F, -40, -40F, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-15 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -15, -30, -30F, -40, -40F, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -15, -30, -30F, -40, -40F, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -15, -30, -30F, -40, -40F, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-40 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -15, -30, -30F, -40, -40F, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-40F | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -15, -30, -30F, -40, -40F, and KC-10A (Military) Series Airplanes |
Unsafe Condition
The hydraulic system number 3 shutoff valve closure may not be observed due to an unobserved indication.
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Required Actions
Install a wire in accordance with McDonnell Douglas DC-10 Service Bulletin 29-132, Revision 1, dated August 26, 1991. The modification must be done per the service bulletin and an alternative method of compliance may be used if approved by the FAA.
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Compliance Time
Within 6 months after the effective date of this AD
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Affected Aircraft
Model DC-10-10, -10F, -15, -30, -30F, -40, -40F, and KC-10A (Military) series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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